X-2y=-4
3x+y=9

solve the simultaneous equation (find x & y)

The difference between tax advoidance and tax evasion

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)